2123240263 has 2 divisors, whose sum is σ = 2123240264. Its totient is φ = 2123240262.

The previous prime is 2123240233. The next prime is 2123240351. The reversal of 2123240263 is 3620423212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2123240263 - 2⁹ = 2123239751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123240233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061620131 + 1061620132.

It is an arithmetic number, because the mean of its divisors is an integer number (1061620132).

Almost surely, 2^2123240263 is an apocalyptic number.

2123240263 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123240263 is an equidigital number, since it uses as much as digits as its factorization.

2123240263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2123240263 is about 46078.6313056280. The cubic root of 2123240263 is about 1285.2858126676.

Adding to 2123240263 its reverse (3620423212), we get a palindrome (5743663475).

The spelling of 2123240263 in words is "two billion, one hundred twenty-three million, two hundred forty thousand, two hundred sixty-three".